PCIe Devices - PLX Technology

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PCI Configuration Address Space n n n Most processors have a linear range of addressable read/write memory capability l Such as 0-64k, or 0-16M, or 0-4G, or 0-64G PCI defines addressable memory as 0 to 4G and everything above 4G l PCI I/O memory space must be located between 0-4GB – Whether this is memory mapped or uses special I/O based instruction (i.e., IN or OUT instruction in conjunction with hardware controlled I/ORD# and I/OWR#) is not specified by PCI PCI configuration space is a separate, dedicated configuration memory area on each PCI device for each function within a device l This is not related to host memory or I/O address space Copyright by Dashcourses, Inc. 2009 1-62
PCI Configuration Header Types n First 16 DWords of a PCI function’s configuration memory is called the header space n Three header formats are currently defined l l l Header type zero – All PCI devices other than PCI-to-PCI bridges Header type one – PCI-to-PCI bridges Header type two – Cardbus bridges (not covered in this class) n Each PCI function on a device has its own configuration space Copyright by Dashcourses, Inc. 2009 1-63
Page 1 and 2:
Presents PCI Express Overview By Pa
Page 3 and 4:
What This Presentation Is About n T
Page 5 and 6:
Specifications n The current PCIe s
Page 7 and 8:
Presentation Layout Section 1 - PCI
Page 9 and 10:
PCI Specification History n n n PCI
Page 11 and 12: PCIe Compatibility and New Features
Page 13 and 14: PCIe Interconnect - Chip-to-Board C
Page 15 and 16: PCIe Design Possibilities Embedded
Page 17 and 18: Compatibility with Existing PCI Spe
Page 19 and 20: New Features n Improved data integr
Page 21 and 22: Scalable Topologies n Hierarchies u
Page 23 and 24: PCI and PCI-X Architecture and Comm
Page 25 and 26: PCIe Command Execution Host System
Page 27 and 28: PCIe Transactions and Packets n PCI
Page 29 and 30: PCI Devices n n n PCI is based on a
Page 31 and 32: PCI Topology with Multiple Host/PCI
Page 33 and 34: PCIe Device/Function PCIe Single Fu
Page 35 and 36: PCIe System Fabric PCIe Root Comple
Page 37 and 38: PCI/PCI-X/PCIe Bridges n Bridges ar
Page 39 and 40: PCI/PCI-X Arbitration Example n n F
Page 41 and 42: PCIe Processing and Priorities n PC
Page 43 and 44: Mythical Example VC ID and Priority
Page 45 and 46: PCIe Root Complex n A Root Complex
Page 47 and 48: PCIe Root Complex Model Host system
Page 49 and 50: PCIe Switch Structure Upstream Port
Page 51 and 52: PCIe Interrupts Host System Bus Whe
Page 53 and 54: PCIe Link is a Point-to-Point Conne
Page 55 and 56: PCIe Differential Drivers n PCIe de
Page 57 and 58: PCIe Link Attributes (continued) n
Page 59 and 60: PCIe Can be Aggregated n PCIe devic
Page 61: MBps vs. Gbps?? n Comparing data ra
Page 65 and 66: PCI Configuration Header Type 0 PCI
Page 67 and 68: Host PCI Bridge Discovery n n n Acc
Page 69 and 70: PCIe Primary/Secondary Bus Scheme P
Page 71 and 72: Optional Registers (continued) Last
Page 73 and 74: PCIe Configuration Space DWord 1000
Page 75 and 76: Key Aspects of Transaction Layer n
Page 77 and 78: PCIe Transactions n Software will t
Page 79 and 80: Address Space and Transaction Type
Page 81 and 82: TLP size Varies n TLP construction
Page 83 and 84: PCIe Transaction Movement Host Syst
Page 85 and 86: TLP Packet Components n TLP packets
Page 87 and 88: TLP Receiver Processing n Received
Page 89 and 90: Message Codes n Messages are define
Page 91 and 92: Section 3 PCIe Data Link Layer Copy
Page 93 and 94: Key Aspects of Data Link Layer n At
Page 95 and 96: Data Link Layer Created Packets - T
Page 97 and 98: Data Link Layer Received Packets Pa
Page 99 and 100: Data Link Layer Handling of TLPs n
Page 101 and 102: Link Initialization and Flow Contro
Page 103 and 104: Initialization n Example TS1/TS2 l
Page 105 and 106: Flow Control n Example credit excha
Page 107 and 108: Basic DLLP Header Fields n All Data
Page 109 and 110: Transaction Layer Buffer Space and
Page 111 and 112: PCIe Power Management Overview n PC
Page 113 and 114:
Link Training and Status State Mach
Page 115 and 116:
Normal Operations n Once the Link i
Page 117 and 118:
Sequence Number - Transmit Requesto
Page 119 and 120:
Section 4 PCIe Physical Layer Copyr
Page 121 and 122:
Physical Layer Overview n The PCIe
Page 123 and 124:
Physical Layer Packets Packet deliv
Page 125 and 126:
Scrambling n Scrambling is a techni
Page 127 and 128:
8B/10B Signal Encoding Data Byte Na
Page 129 and 130:
Special Symbols n Framing and Link
Page 131 and 132:
Other Ordered Sets n n Electrical I
Page 133 and 134:
Link Training Ordered Sets n Using
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